I claim the ornamental design for a cord lock, as shown and described herein.
FIG. 1 is a perspective view of a cord lock showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a right side elevational view thereof, the left side elevational view being a mirror image of FIG. 6; and,
FIG. 7 is a perspective view thereof, the broken line showing of the cord is for the purpose of illustrating an environment and form no part of the claimed design.
The broken lines shown in the drawings are included for the purpose of illustrating environment and form no part of the claimed design.